Real Estate Investing in Iselin, New Jersey (08830)

Everything the listing leaves out — vacancy, rent trend, cap rate, landlord climate. All free.

Middlesex County • Population: 19,151 • Data updated: September 2026

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Should you buy in 08830 (Iselin, NJ)? Our answer, based on the numbers below.

🏠 For Homebuyers
MIXED
Grade C (68/100)

Mixed — home prices are stretched relative to local incomes. Run the math on your specific situation.

📈 For Investors
MIXED
3.0 / 5 (47/100)

A middle-of-the-road market. Workable, but the best opportunities may be nearby ZIPs rather than this one.

⚠️ Risks to Know
1 flag
  • Tenant-protective state: Landlord rating 1.0/5 — slower evictions, more regulations.

What’s happening in Iselin, NJ (08830)?

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3.0/ 5

Investability

Overall investment appeal

3.0/ 5

Appreciation

Long-term value growth

3.0/ 5

Cashflow ROI

Rental yield potential

Avg Home Value $568,366
Avg Monthly Rent $2,728
1% Rule ✗ Does Not Meet
Median Income $109,646
% Renters 31.3%

Market Analysis: 08830 Iselin

Investors eyeing 08830 need to respect the fundamentals at play. Home values of $568K come alongside slower price movement and elevated management overhead.

On the rental side, the numbers look inviting — $568K purchase price, 0.0% nominal cap — the work to hit that pro forma in 08830 is substantial and deserves full respect.

Within NJ, ZIP 08830 trails on several market indicators that neighboring Middlesex County submarkets outperform. The gap is real and robust enough to shape underwriting.

Stepping back, 19,151 residents fill the ZIP, renter turnover runs higher than neighboring postal codes and delinquency risk is a real line item rather than a theoretical one.

New investors are better served looking at Iselin's stable or hybrid ZIPs before stepping into 08830. The learning curve here is expensive when the lesson is wrong.

Explore the Data — Click a Tab Below
🏦 Current 30-yr Fixed Mortgage Rate: 6.76% as of Sep 10 Source: Freddie Mac PMMS

Here's what matters if you're considering buying a home in Iselin:

C+ Average
Buy Confidence Score: 69/100
Affordability
10/25
Appreciation
25/25
Stability
11/20
Timing
8/15
Rental backup
15/15
Affordability
Expensive
Homes cost 5.2× the median income
Value Trend
Rising (+4.1%)
How home values changed in the past year
Rental Backup
Strong
Could rent for $2,728/mo if you need to move
Market Conditions
BALANCED
Even conditions for buyers and sellers
Bottom Line: Mixed signals in this market. Research specific properties carefully and be prepared to negotiate.
🏠

Property Strategy for 08830

Which property type performs best in this market?

Best for Cash Flow
4BR
4.4% cap rate
Best for Appreciation
3BR
+9.7% 5yr CAGR
Best Overall Value
4BR
$150,752/bedroom
📊 Compare All Property Types →
Type Median Value Est. Rent Cap Rate 5yr CAGR $/Bedroom
3BR $546,964 $3,320 4.4% +9.7% $182,321
4BR $603,007 $3,670 4.4% +9.2% $150,752

Market Trends

Home Value History (with trend line)

$604K$527K$450K$373K$297K$220KJul 2006Jul 2016Jul 2026

Rent History (with trend line)

$3,093$2,929$2,766$2,602$2,439$2,275Jan 2024May 2025Jul 2026

📊 How Does 08830 Compare?

Metric 08830 Iselin New Jersey
Home Value $568,366 $568,366 $559,826
5-Year CAGR 7.7% 7.7% 8.4%
Avg Rent $2,728 $2,728 -
Cap Rate 3.7% 3.7% -
💡 Why Invest in 08830? Click to expand

With a 3/5 investability rating, this ZIP shows solid fundamentals for buy-and-hold investors.

📊 See where this ZIP ranks in our Best-of lists →
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Landlord Ground Truth

Real numbers from people who own or manage rentals in ZIP 08830 (Iselin, NJ). Anonymous, moderated, never written by AI.

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Investability
Good
Cap Rate
3.7%
Low
5yr Growth
+7.7%
Strong

📊 Market Snapshot

Home Value $568,366
Monthly Rent $2,728
Price-to-Rent 17.4:1
1% Rule ✗ Fails

💰 Return Metrics

Gross Yield 5.8%
Cap Rate 3.7%
5-Year IRR 11.4%

📈 Home Appreciation

1-Year +4.1% ▲
3-Year CAGR +7.3% ▲
5-Year CAGR +7.7% ▲
10-Year CAGR +6.5% ▲

🏠 Rent Trends

1-Year +11.0% ▲
3-Year CAGR N/A
5-Year CAGR N/A
Negative Leverage — IRR / Tax Play Cap Rate: 3.7%  |  30yr Rate: 6.8%
Leverage reduces cash returns at current rates.

The current 30-yr mortgage rate (6.8%) exceeds the estimated cap rate (3.7%). Financing reduces your cash-on-cash return below the cap rate. Markets like this may still make sense as IRR plays — factoring in appreciation, depreciation, and a future refinance when rates drop.

Run an IRR Analysis →

⚠️ Risk Signals

Composite view of factors that can impact a ZIP's stability and your downside risk.

Vacancy
5.3%
Low risk
Landlord Climate
1.0/5
Protective
Value Trend (5yr)
+7.7%
Growing
Eviction process: Slow Rent control: Unfavorable

Demographics in 08830

Population: 19,151

💰 Median Household Income
$109,646
This area
$109,646
State
$113,906
USA
$74,580
🏠 Renter Occupied
31.3%
This area
31.3%
State
28.4%
USA
34.0%
💼 Unemployment Rate
2.0%
This area
2.0%
State
-9.5%
USA
3.7%
🎓 College Educated
53.3%
This area
53.3%
State
25.9%
USA
33.7%
👤 Median Age
40.4 years
This area
40.4 years
State
22.0 years
USA
38.9 years
🏚️ Vacancy Rate
5.3%
This area
5.3%
State
9.2%
USA
10.5%
👥 Population by Ethnicity
Asian 51.8%
White 28.4%
Other/Mixed 11.7%
Black/African American 8.1%
Hispanic/Latino 7.4%
👶 Under 18
17.7%
This area
17.7%
USA
22.0%
👴 65 and Over
18.2%
This area
18.2%
USA
17.3%
📊 Poverty Rate
4.3%
This area
4.3%
USA
11.5%

Crime & Safety

🚧

Crime & Safety Data Coming Soon

We're integrating comprehensive crime statistics including violent crime rates, property crime, and safety scores to help you make informed investment decisions.

Expected: Q1 2025

🎓 Schools in 08830

A+ Avg School Grade
6 Schools
13.3:1 Avg Class Size
$26,600 Avg Per Pupil

Schools in This ZIP Code

A+ Excellent

Kennedy Park Elementary School

📚 Pre-K – K Elementary
👥
279 Students
👨‍🏫
9.0:1 Class Size
💰
$26,600 Per Student
A+ Excellent

Indiana Avenue Elementary School

📚 K – 05 Elementary
👥
476 Students
👨‍🏫
14.9:1 Class Size
💰
$26,600 Per Student
A+ Excellent

Robert Mascenik Elementary School

📚 K – 05 Elementary
👥
306 Students
👨‍🏫
14.6:1 Class Size
💰
$26,600 Per Student
A+ Excellent

Iselin Middle School

📚 06 – 08 Middle
👥
866 Students
👨‍🏫
12.2:1 Class Size
💰
$26,600 Per Student
A Very Good

Oak Tree Road Elementary School

📚 K – 05 Elementary
👥
470 Students
👨‍🏫
16.5:1 Class Size
💰
$26,600 Per Student
A Very Good

John F. Kennedy Memorial High School

📚 09 – 12 High School
👥
1,398 Students
👨‍🏫
12.4:1 Class Size
💰
$26,600 Per Student

Nearby Schools (5 more)

Schools in adjacent ZIP codes that may serve this area

A+ Excellent

Avenel Middle School

📚 06 – 08 Middle
📍 WOODBINE AVENUE, AVENEL
👥
559 Students
👨‍🏫
7.4:1 Class Size
💰
$26,600 Per Student
A+ Excellent

Colonia Middle School

📚 06 – 08 Middle
📍 DELAWARE AVENUE, COLONIA
👥
587 Students
👨‍🏫
9.0:1 Class Size
💰
$26,600 Per Student
A+ Excellent

Edgar Middle School

📚 05 – 08 School
📍 49 BRUNSWICK AVENUE, METUCHEN
👥
769 Students
👨‍🏫
11.6:1 Class Size
💰
$23,917 Per Student
A+ Excellent

Fords Middle School

📚 06 – 08 Middle
📍 FANNING STREET, FORDS
👥
575 Students
👨‍🏫
9.3:1 Class Size
💰
$26,600 Per Student
A+ Excellent

Metuchen High School

📚 09 – 12 High School
📍 400 GROVE AVE, METUCHEN
👥
698 Students
👨‍🏫
11.5:1 Class Size
💰
$23,917 Per Student
About Repit School Scores

Traditional school ratings rely heavily on standardized test scores, which often reflect family income more than school quality. Repit takes a different approach.

We evaluate schools based on factors that research shows actually impact educational outcomes:

  • Class Size — Smaller classes mean more individual attention
  • School Funding — Resources available for programs, staff, and facilities
  • Community Factors — Neighborhood characteristics that influence student success
  • School Environment — Size, type, and structure

Scores are updated annually using federal education data.

🎓 Nearby Colleges & Universities

8 Nearby 3,299 Off-Campus Students
D
PC AGE-Metropark
56 students · 0.7 mi
C
Lincoln Technical Institute-Iselin
586 students · 0.8 mi
D
DeVry University-New Jersey
74 students · 0.9 mi
C
Pro Beauty Academy
100 students · 1.2 mi
B
Union County Vocational Technical School
60 students · 3.9 mi
D
Universal Training Institute
133 students · 4.8 mi
C+
Middlesex College
11,471 students · 5.2 mi
D
JFK Muhlenberg Harold B. and Dorothy A. Snyder Schools
572 students · 5.2 mi

Investor Insight: With 3,299 students living off-campus nearby, this area has strong rental demand from the college population.

Frequently Asked Questions

What is the typical renter like in Iselin, NJ?

Tenant quality in Iselin, NJ ranks as solid. Landlords generally report steady occupancy at market rents of $2,728/mo.

How high is vacancy risk in Iselin, NJ?

Vacancy risk in Iselin, NJ is elevated. That supports measured cash flow for typical rental holds.

What is the median home value in Iselin, NJ?

Typical homes in Iselin, NJ go for around $568K. The 5-year CAGR of 0.0% measured price movement.

Does a duplex house hack pencil in Iselin, NJ?

For house hackers, Iselin, NJ is a challenging. The $2,728/mo rent on a unit helps defray the mortgage on a $568K property.

Are landlord laws favorable in Iselin, NJ?

Rental owners in Iselin, NJ deal with a tenant-protective legal framework. Most standard eviction processes run on reasonable timelines.

You know 08830 now. You don’t know where it ranks.

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How 08830 ranks in New York-Newark-Jersey City, NY-NJ-PA

Every ZIP in this metro, ranked. Free.

Cash Flow → Appreciation → Affordable →
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